Author/Authors :
Rovira، نويسنده , , C. and Tarrés، نويسنده , , Carlos J. and Ribera، نويسنده , , E. and Veciana، نويسنده , , J. and Canadell، نويسنده , , E. and Molins، نويسنده , , E. and Mas، نويسنده , , M. and Laukhin، نويسنده , , V. and Doublet، نويسنده , , M-L. and Cowan، نويسنده , , D.O. and Yang، نويسنده , , S.، نويسنده ,
Abstract :
The first example of a metallic charge-transfer salt derived from cis-bis(ethylenethio)-tetrathiafulvalene (BET-TTF) is reported. (BET-TTF)2SCN and (BET-TTF)SCN salts were obtained by electrocrystallization starting from trans-BET-TTF. X-ray crystal structure of the mixed-valence salt revealed that trans-cis isomerization occurs upon one electron oxidation. In spite of the structural disorder in both BET-TTF and the counterion, 2:1 salt is metallic down to 60 K and then resistance increases slowly down to 4K.
Keywords :
Organic superconductors , electron spin resonance , X-ray diffraction , Conductivity , Electronic band structures
